Record #00436Technology archive
The Geysers in California comprises 13 geothermal plants and is described by its operator as the world's largest geothermal power complex, with electrical generation capacity of approximately 725 MW.
Current Record
about725MW
Current record value
The Geysers spans parts of Sonoma and Lake counties in California and uses naturally occurring steam to drive turbines.
Its scale reflects a multi-plant complex rather than one power station. Treated municipal wastewater is injected into the geothermal reservoir to support sustained steam production.
The record conclusion has sufficient verification support.
Basis: direct confirmation by an authority
The 725 MW figure is approximate operator-reported generating capacity; 2026 expansion and capacity definitions may affect the figure.
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